Pile-wire-controlling mechanism for looms



March 27, 1923. 1,664.32?

W. E. SMITH FILE WIRE CONTROLLING MECHANISM FOR LQOMS 8 Sheets-Sheet 1 March 27, 1928.

w. E. SMITH 'PILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed Jan27, 1925 a Sheets-Sheet B March 27, 1928. 1,664,327

w. E. SMITH FILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed Jan.27, 1925 8 Sheets-Sheet 3 7 a 5 n a 27 7:6- 75 5 r26 24 March 27, 1928. 1,664,327

w. E. SMITH FILE WIRE CONTROLLING MECHANISM FOR LGOMS Filed Jan.27, 1925 8 s t s t 4 66 f 6 f w I I g 8 Sheos-Sheet 5 W. E. SMITH ILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed Jan. 27 1925 March 27, 1928.

March 27, 192:3.

W. E. SMITH FILE WIRE CONTROLLING MECHANISM FOR Looms Filed Jan.2-7, I925 March- '27, 1928 W E. SMITH FILE WIRE CONTROLLING MECHANISM FOR LOOMS She t-Sheet Fi e d Jap.2

March 27, 1928.

w. E. SMITH FILE WIRE CONTROLLING MECHANISM FOR LOOMS Filed Ja n.27, i925 a Sheets-Sheet 8 Patented Mar. 27, 1928.

UNITED STATS -TEYNT' QFFIC-E.

: WILLIAM E. SMITH, or MILLTOWN, new JERSEY, AssIGNoR '10 GULBENKIANSEAM- LESS RUG COMPANY, or NEW BRUNSWICK, NEW JERSEY, A CORPORATION or NEW JERSEY.

PILE-WIRE-OONTROLLING MECHANISM FOR. L OOMS.

Application filed January 27, 1925. Serial No. 5,041.

The object of my invention is to improve the pile wire controlling mechanism of car pet weaving looms and especially that type of loom on which is woven seamless rugsof the larger proportions, with a view of eliminating the so-called smash, common to this type of loom, such as result from the misplacement of a pile wire in the open warp shed of the fabric being woven, by the wire controlling mechanism.

The wire controlling mechanism employed I on looms in general use at the present time comprises a Wire switch and a wire carriage reciprocally mounted on a rail securedto the frame of the loom.

The wire carriage is moved in one direction, to withdraw a pile'wire from the woven fabric, by an endless chain belt and in a reverse direction, to insert a pile wire into the open pile warp shed ofthe fabric being woven, by a rope and spiral wheel motion well known to those familiar with the art.

The rope and spiral wheel n otion employs mechanism including a friction clutch which is extremely unreliable in operation, diflicult to adjust and maintain in adjustment and is therefore responsible for a large percentage of the costly loom stoppages, so well known to those engaged in the manufacture of textile fabricsprocluced on looms of this general type.

Should a drop of oil enter between the engaging elements of the said friction clutch, or should a slight amount of additional friction develop between the wire carriage and the rail on which it reciprocates, or should a change of temperature affect the length of the rope of such motion, the wire being in serted into the open warp shed of the fabric being woven will be misplaced with respect thereto, by reason of the clutch slipping or the variation in the length of the rope. Such misplacement usually consists of the wire not being fully inserted and the shed closing on the knife end of the wire, with a resultant cutting of the warp threadscommonly designated as a smash.

One of the essential features of my invention is to replace the above mentioned unreliable friction clutch and all the vother op erating and controlling elements of the rope and spiral Wheel motion, with mechanism of a positive operating nature, which will be fully described in the bodyof the following specification.

On this larger type of-loom, the pile wires are beat up into the carpet in the usual mtlIlIlGl,bllt, due to the large number of warp threads formed into loops around each of the pile wires, it isextremely difficultto withdraw a wire from the woven carpet. As the pile Wire, is withdrawn, the knife, formed on one end ofthe same, cuts the en gaging pile warp thread loops, to form the cut p le face 'of the carpet.

The carriage overhangs the rail and switch at one of its sides on which is mounted a wire engaging hook, offset from the centre line of the'operating chain and'in line with raise at its overhanging side, as the pile wlre is withdrawn, thereby raising the head end of the pilewire from the bottom of the switch groove. Such raising of the head of the pile wire causes the said wire to flex or bowvertically;

lVhen the carriage is moved in its reverse d rection, to insert the previously withdrawn pile wire, the said flexing of the'body of the same, causes the knife end of the pile Wire to be CllVGI'tGd from a straight line course. the said knife end fouling the Warp threads of the open shed and thereby cutting said pile warp threads to a more or less serious extent. This condition is .also commonly termed aq,smash, in the'art, andis primarily caused by the saidflexing of the, pile wire, when it is-inserted into the open pile Warp shed by the pile wire controlling mechanism.

Considerable time is required, wherein the loom is noperative, to repair the resultant damage of the so-called smashl Another essential feature of my invention s to provide mechanism by which the raismg of the overhanging side of the pile wire carriage is arrested immediately after the initial movement of the carriage and the pile line 66,

wire, with respect to the woven carpet, and the pile wire is returned to the bottom of the switch groove wherein it is maintained throughout the remainder of its travel outwardly, and also throughout its entire inward travel whereby it, is projected through the open pile warp .shedin a straight course avoiding contact with the threads forming such shed. The shed then changes and the lay of the loom heats up the wire in the usual manner.

Other advantages pertaining to the details of construction of my improved pile wire controlling mechanism will be fully disclosed in the specification and shown in the accompanying drawings, wherein:

Figs. 1 and 2 are respectively diagrammatic plan and front elevational view of sufficient of a loom to illustrate the operation of my invention as applied thereto.

Fig. 3 is an enlarged plan view of the carriage and its associated elements;

Fig. 4 is a sectional elevation taken on the line 44, Fig. 3;

Fig. 5 is a sectional elevation taken on the line 55, Fig. 3;

Fig. 6" is a sectional elevation taken on the Fig. 3;

Fig. 7 isia sectional elevation taken on the line 7-7, Fig. 3.

Fig. 8 is an enlarged front elevation of the outer end of the carriage rail with certain of the carriage controlling elements mounted thereon and showing the carriage as having completed its outward travel;

Fig. 9 is a transverse sectional elevation taken on the line 9-9, Fig. 8; a

Fig. 10 is a transverse sectional elevation taken on the line 1010, Fig. 8

Fig. 11 is a sectional elevation taken on theline 11-11, Fig. 9;

Fig. 12 is a rear elevation of the mechanism shown in Fig. 8, the carriage in this instance being considered as having completed its inward travel;

Figs. 13, 14, and 14 are perspective views of certain detailsof the invention as shown in Figs. 11 and 12 respectively;

Fig. 15 is a sectional view taken on the line 15-15, Fig. 9;

Fig. 16 is a fragmentary elevation of a special idler sprocket wheel employed in my pile wire controlling mechanism; and

Figs. 17 and 18 are sectional views taken on the lines 17 -17 and 18-18, respectively,

Fig. 16-.

Referring to Figs. 1 and 2, the loom is illustrated at a; the pile wire controlling mechanism at, b; the pile wires at. c and the pile wire carriage at a.

The open pile warpshed is illustrated at e; the beat up uncut pile face of the carpet with the pile wires therein is shown at f; and the cut piletace of the carpet is illustrated at g.

The pile wire controlling mechanism 22 consists of the usual substantially U-shaped rail or track 1 and a switch tongue 2', pivoted to the rail at 3.

he vertical walls of the rail 1 are grooved as at 4 for the reception of laterally and longitudinally extending ribs 5- of-aslide block 6, of the carriage d A plate; 7; is secured, adjacent one ofits sides, to the slide block 6 by stud bolts as shown in Fig. 7. The plate 7 of the carriage d overhangs the switch 2 at its side opposite the rail 1,. and has pivotally securedlthereto a hook 8 for engaging the pile wires 0, successively. A bracket 9 is also secured to the plate 7 by the said stud bolts and provides a support for one end of each of a pair of pivot bolts 10 and 11, on which are respectively mounted a dog 12 and a retaining-lever 13. The opposite ends of the bolts 10 and 11 are su ported in a verticalflange 14 of the plate The lever 13 is resiliently held in engagement with the dog 12 by a spring 15, (Fig. 3). The dog 12 is adapted to be engaged by a lug 16 on one link of a link belt 17, which runs in the rail' 1 in the usual manner as shown in Fig. 4 of the drawings. l

The link belt 17 is driven by a sprocket wheel18 and passes around idlerwheels19-4 19 and 2020 in the usual manner. as clearly shown in Fig. 2, for the purpose of engaging the carriage (Z and moving it so as to with draw successive pile wires from the carpet.

At the end of the outwardtravel of the carriage d, a projecting end of the lever 13 is engaged by a trip 21 on the rail Land the dog 12 is thereby released from the link belt 17 and the carriage stopped; at which time the free end of the switch tongue 2 is moved from its pile wire withdrawing position to its pile wire insertingrposition. The pile wire inserting motion then becomes operative to move the pile wire and the carriage in a direction to reinsert the said pile wire into the open warp shed.

Mounted on the vertical flange 14 andsecured thereto by the bolts: 11 and 1-2 is a bearing member 31 having thereon a pair of horizontally and axially aligned bearings 22 and 23. Slidably mounted in the Silldbenl" ings 22 and 23 is a rod 24, shouldered as shown for engagement with a loosely mount ed collar 26 having projecting lugs 27 and 28' integral therewith. The collar 26 is held in contact with the inner. end o'f the bearing 23 by a spring 29 which encircles the outer end of the rod 24 and is adjustably confined,

between the outer end 01": the bearing 23and' a pair of collars 3O 3O adapted to a screw threaded end of the rod 24.

The lug 27 of the collar 26 is undercut opposite the bearing 23, for engagement by a hooked end 32 of a latch 33. The latch.33' is pivoted at 34 to the bearing member 31 and is normally retained in contact with the collar 26 by a spring 35, as shown in Fig. 6. The latch 33 has a projecting end 36 adapted to be engaged by a trip 37 secured to the rail 1 at the inner end of the travel ofthe carriage (Z, simultaneous with the contacting of the carriage with afixed abutment 38 on the frame 39 of the loom a.

' The wire carriage d is moved in the direction to insert a pile wire into theopen shed of the fabric being woven, by an endless chain 25, adapted to sprocket wheels 40 and 41 rotatably mounted on studs'secured in the frame 39 and the rail 1' respectively. A lug 42 integral with one link of the chain 25 is adapted to engage the projection 28 of the collar 26.

The switch tongue 2 is grooved'at 43 for the reception of the pile wire under control. A bar 44 is resiliently mounted in the groove 43 and is normally forced toward the wall 45 thereof by springs 46 for the purpose of keeping the pile wire straight and preventing horizontal flexing of the same.

' To prevent or arrest the raising action of the overhanging side of the plate 7 and the consequent vertical flexing of the pile wire under control, I. provide brake structures 50 and 51. Y

The brakestructure 50 comprises a vertically extending flanged bushing 52 secured to the plate 7 by screws 54. A rod 55. is mounted in th'ebushing and is free to slide axially thereof, having at its lower end a metallic shoe 56 rigidly secured thereto. The shoe 56 is lined with suitable friction material 57 secured thereto and operatively engaging the underside of a longitudinally ex tending bar 58 secured at intervals throughout its length, adjacent the upper, edge of the rail 1, by screws 59. A heavy compression spring 60 is confined between the flange 53 of the bushing 52 and a retaining collar 61 adjustably held adjacent the upper end of the rod 55 by nuts 6262. A second rod 63 is rigidly secured to the metal shoe 56 and extends vertically through an aperturein the plate 7, for the purpose of retaining the said shoe 56 in parallel relationship to the rail 1, at all times.

The braking structure 51 consists of a vertically extending bearing 64 having a cylindrical bore 65 and is internally threaded at its upper end to receive a tubularadjusting bolt 66. The bearing 64 has side flanges 67 rigidly secured to the vertical flange 14, of the plate 7, by rivets 68. Slidably mounted within the bore 65 is a shouldered rod 69,

the lower or larger portion thereof snugly fitting the said bore 65, while the portion of smaller diameter snugly fits the bore 70, of

the tubular bolt 66. A compression spring 71 is confined within the bore 65 of the bearing 64 and between the shoulder of the rod 69, and the lower end of the hollow bolt 66, which tends to force a shoe 72, on the lower end of the rod 69, into contact with the upper face of one of the side Walls of-the rail 1.

3 at its overhanging side, is to move downward and against the'upper face of the switch tongue 2', using the, edge of the bar 58 as a fulcrum. .This action is extremely noticeable on looms wherein a perceptible amount of wear has occurred between the ribs 5 of the'slide block 6 and the grooves 4 of the rail 1. They will also act to prevent overrunning of the carriage (Z when resistance to themovement thereof is relieved.

v It is desi'rable to construct the pivot of the hook 8 in, such a manner as toprevent it from becoming loose, in the plate 7, due to the suddenness with which heavy loads are applied thereto. The hook 8 pivots on a bushing 75having a flange 76, between which and the upper face of the plate-'7 the hook 8 turns. A bolt 77- having'a head 7 8' adapted to a counter bore 79 in the underside of the plate 7 is provided, which with the nuts EEO-80 binds the bushing 75 rigidly to the plate 7.

, Thesprocket wheel 20, distant from' the frame 39 of the loom and around which the link belt 17 passes, is secured against relative rotation therebetween tea hollow shaft 85, as shown in Fig. 9.

The shaft is journaled in the side wallsto a rod 94 slidably mounted inthe bore 95 of the hollow shaft 85. Clutch jaws 96 on the clutch member 92 are adapted to engage clutch jaws 97 integral with a gear wheel-98 loosely mounted onthe shaft 85, said gear 98 rotating on the shaft 85 between a collar-99 secured to said shaft and an extended bearing 100 on the wall 86. The gear wheel 98 meshes'with a gear wheel 101 rotatably mounted on the stud 41 said gear being rigidly secured to the sprocket wheel 20 adjacent thereto. The shaft 85 is c-ounterbored at 102'for the reception of an enlargement 1030f the rod 94. A compression spring 104 surrounds the rod 94 between the enlargement 103 thereof and the base of thecounterbore 102 shaft. 85 and to move the jaws 96 of the clutch member 92 into engagement with the jaws 97 on the gear wheel 98.

The shaft 85 is transversely slotted at 105 for the reception of a retaining dog 106, which normally lies in contact with the rod 94 at a point adjacent the end of the enlargement 103 opposite to that engaged by the spring-104, for the purpose of maintaining the clutch element 92 in an inoperative position with respect to the gear wheel 98.

he dog 106 is pivotally mounted at 107 (Fig. 11) j on a split collar 108, loosely mounted on and angularly adjustable with respect to the shaft 85 adjacent the side wall 87 of the extension '88. 'A clamping screw 109 is provided for the purpose of clamping the split collar 108, rigidly, in any position on the shaft 85 to which it may be adjusted. A coiled spring 110 tends to force the dog 106 into engagement with the rod 94 at all times. The dog 106 is provided with a laterally projecting stud 111 on which is rotatably mounted a cam roller 112, for engagement with a cam shaped end 113 of a lever 114.

The lever 114 is secured to one end of a sleeve shaftv 115 rotatably mounted in the wall 87 On the opposite end of the sleeve shaft 115 is secured a lever 116, provided at one of its ends witha roller 117 adaptedto be engaged by a cam link 118 forming one of the side links of which the link belt 17 is composed. The opposite end of the lever 116 is provided with a limit screw 119 adapted to engage the upper side of the end wall 89 of the extension 88; A'spring 120 tends to retain the screw 119 in contact with the top of the end wall 89, the cam lever 114 in an inoperative position (shown in broken lines in Fig.11) and the cam roller 117 in a position to be engaged by the cam link 118.

The rod 94 has a second enlargement 121 thereon. A clutch release cam 122 is mounted on said rod adjacent the outer end of said enlargement 121 and consists of a split collar 122 having a cam projection 123 thereon. The cam 122 is angularly adjust-v able with respect to the rod 94 and is adapted to be retained in its adjusted position by means of a clamping screw 124.

A lever 125, having a cam projection 126 thereon which is movable into or out of a cooperating position with respect to the cam projection 123, is secured to a shaft 127, one end'of which is rotatably mounted in the wall 86 the opposite end thereof being rotatably mounted in a supporting bracket 128 secured to the wall 87. The side of the lever 125 opposite the cam projection 126 lies in contact with the inside surface of the bracket 128. The shaft 127 is axially aligned with v and passes through the sleeve shaft 115 and has secured to its end adjacent the wall 86 a lever 129.

with a roller 131 for engagement with a cam link 132 forming one of the side links of the d link belt 17, for the purpose of moving the cam end 126 of the lever 125 from its normal' posit-ion (shown in broken lines in Fig. 12) to its operative position shown in dotted lines in Fig. 12. The opposite end 133 of the lever 129 is provided with a'limit screw 134, adapted to engage the top surface of the endwall 89 when said lever occupies its normal position, in which it is maintained by a spring 145.

The link belt 17 comprises centre links 136 onone of which is the project-ion 16; side links 137 two of which, on opposite sides of the chain 17, are replaced by'the cam links 118 and 132;-and intermediate links 138 which are adapted to engage sprocket members 139139 of the idler sprockets 19. Centre sprocket members 140 engage the chain 17 in a manner similar to In operation the wire carriage d is moved outwardly from the loom proper by the link belt 17 in the usual manner to withdraw a wire, previously engaged by the hook 8, from the woven fabric. As the carriage and said engaged pile wire receive their initial movement outward, the overhanging side of the carriage tends to rise and with it the head end of the pile wire. Immediatelyafter such initial movement the said raising tendency is arrested by the brake units 50 and 51 and the carriage is returned to a position wherein it engages the upper surface of the switch 2 and forces the pile wire downward into the bottom of the groove 43 wherein it is maintained throughout its movement outward and inward.

Maintaining the pile wire in the bottom of the switch groove 43 insures its insertion into the open pile warp shed in a straight line, thus avoiding the fouling of the threads of said open shed.

Immediately preceding the attainment of the extreme position in the outward travel of the carriage, cl,the projecting end of the retaining lever engages the trip 21 and the dog 12 is thereby released from the projection 16 of the link belt 17, with a consequent stopping of the carriage d as illustrated in its movement in an uninterrupted manner.

The wire switch 2 is then movedfrom its wire withdrawing position to its wire inserting position. j

At the proper time, determined by the position of the cam link 118 on the link belt 17, the cam link 118 engages the roller 117, moving the cam end 113 of the lever 114 into engagement with the continuously rotating shaft 85 and into the path of rotation of the roller 112, which thereafter engages and rides up on the said cam end 113 with a consequent withdrawal of the retaining dog 106.

Withdrawal of the dog 106 from engagement with the enlargement 103 of the rod 94 permits the said rod 94 to be moved axially by the spring 104, with a consequent engagement of the clutch jaws 96 of the clutch element 92 withthe clutch jaws 97 of the gear wheel 98 causing the same to be rotated with the shaft 85.

Rotation of the gear wheel 98, by reason of its meshing with the gear wheel 101 causes the said gear and the attached sprocket wheel 20 to rotate, thereby causing a move-. ment of the'linkbelt 25 in a direction opposite to the link belt 17 and at an increased speed thereto.

The lug 42 through its engagement with the projection 28 of the collar 26 which in turn is engaged by the latch 33, moves the carriage d and the previously withdrawn pile wire inwardly.

Immediately preceding the attainment of the extreme position in the inward travel of the carriage (Z, or just as the said carriage is about'to contact with the fixed abutment 38, the projecting end 36 of the latch 33 engages the trip 37 thereby releasing the hook 32 thereof from theprojection 27 of the collar 26 which releases the chain 25 from its load, any additional motion of the said chain, being'absorbed by the spring 29 as the rod 24 is movedlongitudinally, the said carriage contacting with the fixed abut- ,ment 38.

- Simultaneous with :the releaseof the hook 33 from the chain 25ithe cam link 132 has engaged the roller 1'31 causing the cam end 126 of the lever 125to bemoved into. a posi-- tion between the inner side of the bracket 128 and the outer side of the cam collar 122.- As the shaft 85 and rod 94 continue to rotate the cam projection 123 of said collar engages the cam projection 126 of thele'ver 125, with a consequent axial movement of the rod 94 against the action of the spring 104 until the outer side of the enlargement 103 passes the inner side of the dog 106 which promptly drops into the annular groove formed between the two enlargements 103 and. 121, by action of the spring 110. a

It will be understood that the cam link 118 moves from under the roller 117 and the elements controlled thereby return to their normal positions, the operation of the dog 106 above described is thereby permitted.

The axial movement of the rod 94 releases the clutch jaws 96 from the jaws 97 causing the chain 25 to come to rest. Release of the clutch element 92 is accomplished with ease due to the fact that the load "onfthe chain 25 is simultaneously released by the tripping of the latch 33 by the trip 37.

At this time the wire has been reinserted into the open warp shed which immediately changes and the hook 8 has engaged the next successive pile wire to be withdrawn. Due to the developed length of the link belt 17 and thespeed with which the same has been moved in time with the otheroperating elements of the loom, the projection 16 now engages the dog 12 in the carriage d and move-s the same outwardly. Henceforward the cycle of operations just described will be repeated.

It will be apparent from the above dc scription that I control both the wire with-v drawing and the wire inserting motions of the carriage cZfby mechanism of apositive operating nature and without the use of the unreliable friction clutch common to this type of'loom.

It will also be apparentthat I am ableto avoid the flexingofthe pile wire as it is inserted into the open warp shed so that it enters thereinto ina straight line and with{ out fouling the threads forming said shed.

By the use of my. invention, I. eliminate the breaking. of the pile wire heads from the wires, caused by the-wire being, mis-' placed when inserted intothe'pile warpshed and the head thereof being struck byithe shuttle box, when the lay of the loom"beats up the pile wire thathas in this manner. I 77 As a precautionary measure against breakage of the carriage elements, in event been misplaced of the carriagebecoming jamme'd'during its:

to at the proper time by mechanism con trolled by a second continuous movingendless chain having cam links thereon, or by.

a continuously rotating cam wheel which may operate a clutchand controlling mechanism similar to that disclosed. I the refore for controlling the operation of the other of said belts.

2 The combination in a loom employing pile wires, of a carriage for controlling the withdrawal of said pile wires successively and their reinsertion into the open warp shed of the fabric being woven; a rail power means for performing such withdrawing operation and power meansfor performing such reinserting operation; means co'operw tively associated withsaid carriage and said rail for preventing distortion of said pile wire while undergoing said operations; and means for releasing the said power means from the carriage at the completion of each withdrawing and each reinserting movement of'said carriage.

3. The combination in a loom employing pile wires, of a track; a reciprocating pile wire controlling carriage'on said track; a wire switch adjacent said track; means carried by saidcarriage and engaging said track and tending to tilt said carriage laterally relative to said track and toward said switch for maintaining a portion of said carriage in contact with said switch throughout the reciprocation of said carriage; and means for reciprocating said carriage on said track i 4; The combination in a loom employing pile wires, of a reciprocating pile wire controlling carriage; a continuously driven link belt; an intermittently driven link belt asso-V ciated with said carriage; means for actuating said intermittently driven link belt; means on said continuously driven link belt for controlling'said actuation of the intermittently driven link belt.

5. The combination in a loom employing pile wires; of a reciprocating pile wire controlling carriage; a continuously driven link belt for moving said carriage in one direction, an intermittently driven link belt for moving said carriage in the opposite direction;me ans for actuating said intermittently driven link belt; means on said continuously driven belt for controlling the actuation of said intermittently driven belt; and means for disengaging the said carriage from the said link belts when said carriage attains theextreme position at each end of its reciprocation. i

6. The combination in a loom employing pileiwires, of a track; a pile wire controlling carriage reciprocally mounted on said track; a constantly driven link belt; a dog on said carriage, a retaining lever on said carriage and engaging said dog; a projection on said constantly driven belt designed to engage said dog and move said carriage in one direction,a trip on said track for disengaging said dog from said projection when said movement has been completed; an intermittently driven link belt; a latch on said carriage; a resiliently mounted collar on said carriage engaged by said latch; a projection on said intermittently driven link belt engaging said collar, for the purpose of moving said carriage in a reverse-direction; a trip on said track for disengaging said latch from said collar when said carriage has completed said reverse movement; means for actuating said intermittently driven link belt, and means on said constantly driven link belt for controlling the said actuating means.

7 The combination in a loom employing pile wires, of a pile wire controlling carriage reciprocally mounted on a track; a

constantly driven link belt; an intermittent ly driven link belt; a hollow shaft rotatably mounted in said track; a sprocketkeyed to said hollow shaft around which the constantly driven link belt passes; a gear wheel loosely mountedon said hollow shaft; a clutch element on said gear wheel a gear wheel loosely mounted on said track and meshing with said first mentioned gear wheel, a sprocket secured to said second mentioned gear wheel, around. which said intermittently driven link belt passes; a positive acting clutch element on said hollow shaft adapted to engage the clutch element on said gear wheel; means on said track for operatmg said clutch; and means on said constant- 1y driven link belt for controlling said clutch operating means.

8. The combination in a loom employing pile wires of a reciprocatingpile wire controlling carriage; and a link belt for controlling the reciprocation of said carriage,

com risin centre links and side linksr0 b 7 v V 7 jections on saidcentre links and projections on said side links for cooperative: engagement with elements which control said reciprocation; and intermediate links for en,- gagement with idler sprockets around which said link belt passes.

9. The combination in pile wire'controlling mechanism for a loom, of a rail secured to the frame of said loom; a pile wire switch pivoted to said rail; a carriage slidably mounted on said rail; a bar secured to said rail; a braking structure mounted on said carriage and frictionally e'ngaging'the underside ofsaid bar; a second braking structure mounted on said carriage and frictionally engagingthe upper surface of'said rail; means forreciprocating said carriage on said rail; and means for releasing said carriage from said reciprocating"means at the end of each completed stroke of the re clprocation of said carriage.

10. The combination, in pile wire controlling mechanism for a loom, of a rail; a pile" wire switch having a groove; pile wires adapted to successively enter a groove in said switch; a carriage slidably mounted on said rail; a hook pivotally mounted on said carriage and adapted to select and engage the said pile wires successively; means for reciprocating said carriage and the selected pile wire; means on said carriage and cooperatively engaging said rail for forcibly maintaining the said selected pile wire in the bottom of said switch groove during the reciprocation thereof; and means for releasing the carriage from the reciprocating means at the completion of each stroke of the reciprocation of said carriage.

11. The combination in pile wire controlling mechanism for a loom, of a rail; a grooved pile wire switch; pile wires beat up into the fabric being woven on said 100111; a reciprocal carriage on said rail; a

hook on said carriage, for engagmg said beat up pile wires successively; power means for moving the carriage outwardly along said rail; a trip on the rail for releasing said power means; bearings on said carriage; a rod in said bearings; a shoulder on said rod; a collar on said rod engaging said shoulder; a latch pivoted to said carriage a hook on said latch normally engaging said collar; a spring for yieldably retaining said latch in contact with said collar; an extension on said latch; a trip on said rail for engaging said extension; a spring surrounding said rod for returning the rod to its normal position in said bearings; and adjustable collars on said rod for retaining and adjusting said spring on said rod.

12. The combination in pile wire controlling mechanism for looms, of a rail; a bar secured to said rail; a carriage slidably mounted on said rail; a flanged bushing secured to said carriage; a vertically slidable rod mounted in said bushing; a metallic shoe on the lower end of said rod; friction mate-f rial secured to said shoe and engaging the under side of said bar; a collar adjacent the upper end of said rod; retaining nuts adjustably mounted on said rod above said col lar; a compression spring encircling said rod and confined between the flange of said bushing and the collar on said rod; a second braking structure on the carriage and engaging the upper surface of said rail; and means for reciprocating said carriage on saidrail.

13. The combination in pile wire controlling mechanism for looms, of arail; a bar secured to said rail; a carriage slidably mounted on said rail; a braking structure mounted on said carriage and engaging the lower surface of said bar; a vertically extending flange on said carriage; a vertically extending bearing secured to said flange; a tubular bolt adj ustably mounted iu'the up per end of said bearing; a shouldered rod slidably mounted in said bearing and said tubular bolt; a metallic shoe on the lower end of said rod; friction material secured to said shoe; an aperture in said carriage through which said shoe passes into opera tive engagement with the upper surface of said rail; a spring encircling said rod and confined between the lower end of said tubular bolt and the shoulder on said rod; a jam nut on said tubular bolt; and means for reciprocating said carriage on the rail.

14. The combination in pile wire controlling mechanism for a loom, of a rail; a grooved switch tongue adjacent saidrail; a carriage slidably mounted on said rail and overhanging said switch; pile wires; a hook on said carriage for engagement with one of said pile wires; a counterbored aperture in the overhanging portion of said carriage; a headed bolt adapted to said counterbored aperture; a bushing surrounding said bolt and positioned on the top of said carriage;

a flange on the said bushing between which and the said top of the carriagesaid hook is pivotally mounted; threaded nuts adapted to the upper end of said bolt by which said flanged bushing is rigidly secured to" said carriage; power means for moving said carriage outwardly, whereby said hook will withdraw the engaged pile wire from the fabric being woven; power means for moving said carriage inwardly to reinsert said wire into the open warp shed of said fabric; means for maintaining said pile wire in the bottom of the said switch groove during such movements of said carriage; and means for instantaneously releasing said carriage from the reciprocating power means at the end of its stroke in each direction.

15. The combination in a loom of a rail;

a reciprocating wire controlling carriage;

a link belt for moving the carriage outwardly on said rail; a shaft driven by said link belt; a gear wheel loosely mounted on said shaft; a clutch on said shaft cooperatively associated with said gear wheel; a gear wheel, loosely mounted on a stud extending from said rail, and meshing with said first mentioned gear wheel; a sprocket wheel loosely mounted on said stud adjacent said second mentioned gear wheel; a second link 16. The combination in a loom employing pile Wires of a reciprocally mounted Wire controlling carriage; means for reciprocating said carriage including a driving shaft and a clutch element thereon; and safety means associated with said carriage reciprocating means including a'pin passing through said shaft and said clutch element and adapted to be sheared by relative movement therebetween for the purpose of preventing the breakage of any of the other of said elements due to abnormal loads beingapplied thereto.

WILLIAM E. SMITH." 

